Posted on 10/23/2020
CHICO residents who are old enough have probably heard the term “fan belt”. Back in the day the radiator fan in your vehicle was turned by a belt driven by the engine. There are still belt driven fans, although most are now driven by the serpentine belt. But most CHICO vehicles now have electric fans that draw fresh air across the radiator to cool it. As coolant/antifreeze circulates in the cooling system it captures heat from the engine and flows into the radiator. Air cools the radiator and the coolant in it before it sends it back into the engine to pick up some more heat. Now your engine has an ideal temperature range in which it is most efficient: it shouldn't be too hot or too cool. The electric radiator fans help maintain the ideal temperature. A switch mounted in a cooling system passage checks the temperature of the coolant. If the coolant is at the low end of the range, the switch turns off the fan motor. When the coolant rises to a certain temperature ... read more